2008
DOI: 10.1590/s0102-77862008000400004
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Avaliação do modelo BRAMS na formação de nevoeiro de radiação em ambiente com turbulência pouco desenvolvida

Abstract: RESUMONevoeiro de radiação é normalmente precedido por forte resfriamento noturno. Em determinados eventos, a magnitude deste resfriamento é tão intensa que os modelos operacionais de previsão de tempo não conseguem representa-lo adequadamente. Simulações foram realizadas com o objetivo de reproduzir a formação do nevoeiro de radiação, observado na madrugada do dia 18 de abril de 2007. Foram testados parâmetros e parametrizações relacionados a turbulência disponíveis no modelo BRAMS versão 3.2. Para o cálculo … Show more

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(2 citation statements)
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“…Eighty-two fog events were identified in Porto Alegre from 2008 to 2009, where 52% occurred in autumn, 32% in winter, 9% in spring and 7% in summer (Table 2) (Table S3). This result is in agreement with the results of previous studies (Piva, 1999). Only 1 fog event also recorded light rain at the same time, 8/20/2008.…”
Section: Analysis Of Fog Cases In the City Of Porto Alegre -Rssupporting
confidence: 93%
See 1 more Smart Citation
“…Eighty-two fog events were identified in Porto Alegre from 2008 to 2009, where 52% occurred in autumn, 32% in winter, 9% in spring and 7% in summer (Table 2) (Table S3). This result is in agreement with the results of previous studies (Piva, 1999). Only 1 fog event also recorded light rain at the same time, 8/20/2008.…”
Section: Analysis Of Fog Cases In the City Of Porto Alegre -Rssupporting
confidence: 93%
“…Radiation fogs have the following characteristics: 1) temperature inversion; 2) wet layer at low levels and a dry layer in the rest of the atmosphere; and 3) weak wind speed at the Earth's surface (Piva et al, 1999).…”
Section: Introductionmentioning
confidence: 99%